doppler shift correction for OFDM

Hi all,


suppose I have an OFDM signal coming from a source moving towards me at high speed. The symbols will be compressed in the time-domain resulting in an upwards shift in the center frequency, and a broadening of the signal bandwidth. The question is, can I correct this by simply using a higher frequency reference crystal on the receiver side?


thanks,
Aaron

This dynamic multipath equalization can be done only in DSP.

thanks for the reply. Lets say there's no multipath, strictly only doppler effect. I'm thinking that doppler is just compressing the signal in time, so if I speed up the "time" of the receiver, then doppler corrected. Any thoughts?

additional question: suppose I have a satellite link sending an 20-MHz OFDM (64 pt) signal at 6 GHz, and travelling at 50000 km/hr. So the doppler shift is about 300 kHz, while the signal is compressed by about 1 kHz. Given the carrier spacing is around 300 kHz, this 1 kHz seems rather insignificant, while the 300kHz offset can be corrected using a mixer. Does that sound right or am I missing something?

thanks,
Aaron